Post applies the offset and other cycle data parameters that are appropriate to the cycle. XBUILD provides the <X-COORD> and <Z-COORD> reserved words to receive the path coordinate data. Additional reserved words: <ARC-X>, <ARC-Z>, <X-CEN>, <Z-CEN>, <RADIUS>, and <S-RAD> are provided by XBUILD to receive the circular interpolation modifiers that are needed for arc moves.